Dobby loop



L. B. MOORE Sept. 15, 1959 DOBBY LOOP Filed May 14, 1956 rally-.1II.vIJJIIJIIIIIIIIIIJIIIIJIII 1' INVENTOR. u/vasm .5. M00785 BY ze/cmsy, WA 775,

United States Patent DOBBY LOOP Lindsay B. Moore, Greenwood, S.C., assignor to James Hunter, Incorporated, a corporation of South Carolina Application May 14, 1956, Serial No. 584,615 '3 Claims. (Cl. 139- 84) This invention relates generally to dobby loops for looms and is particularly concerned with a new dobby loop which can be assembled easily and quickly with the cord used to actuate the harness frame of a loom.

Various means have been used heretofore to connect the dobby or harness frame cord of a loom with the dobby jack or harness frame actuator. One type of this means is known as a dobby loop and is disclosed in Harris Patent No. 2,437,739. Some difficulty is experienced and considerable time is spent in assembling loops of that type with the harness frame cords because of the necessity of threading one end of the harness frame cord through the hole in the loop.

The present invention aims to avoid that difiiculty and loss of time and attains that object by providing a dobby loop which can be opened to receive a midpart of a harness frame cord While its ends are attached to a harness frame.

The present invention will be better understood by those skilled in the art from the following specification and the drawings which accompany and form a part thereof and in which:

Fig. 1 is a side view of a preferred form of the present invention in assembled position with fragments of a dobby jack and a dobby cord;

Fig. 2 is a sectional view of the dobby loop taken on line 2-2 of Fig. 1;

Fig. 3 is a fragmentary edge view of the cord engaging end of the loop of Fig. 1;

Fig. 4 is a side view of the dobby loop of Fig. 1 with the parts in opened position to receive a dobby cord;

Fig. 5 is a view similar to Fig. 1 but showing a modified form of the invention; and

Fig. 6 is a view similar to Fig. 2 but showing the modification of Fig. 5.

In Figs. 1 to 4 is shown a preferred form of dobby loop embodying the present invention. This loop consists of a pair of sheet metal strips 1 which are connected together at one end by a pin 2 on which is rotatably mounted between the strips a rotatable member 3 which, preferably, is in the form of a bar having at least one, and preferably three, projections 5 to engage in notches 6 on the edge of a dobby jack 7. The sheet metal strips 1 may be rotated relative to each other on pin 2 and are provided at their free ends with means for inter-engagement with each other. The means illustrated in Figs. 1 to 4 includes end portions 8 which are bent out of the plane of the strips lie close to one another, and these portions are provided with splits 9 extending approximately half of the width of the portions 8, and the portions separated by these splits are bent laterally so that each split may receive the end portion of the other strip. By reason of this inter-engagement of the end portions of the strips, the strips will retain their position ice when in use and yet may be readily separated to permit a dobby cord 10 to be passed therebetween and into the space between the strips.

The end portions 8 of the strips 1 are provided with curved surfaces 11 on which the dobby cord may slide when the loom is in operation.

Figs. 5 and 6 show a modified form of the present invention. In this form sheet metal strips 12 are connected at one end by a pin 13 on which is mounted between the strips a rotatable member 14 which, as shown, is in the form of a bar with a single projection 15 thereon. This projection is to seat in a notch 6 of a dobby jack 7 while the edges of the bar on either side of the projection bear against the edge of the dobby jack. The end portions 18 of the strips 12 are bent on axes normal to the long axis of the strips and are shaped so that the curved part of one will nest within the curved part of the other and by inter-engagement of these parts the strips will be held in closed position during use. The end portions 18 are provided with curved surfaces 19 on which a dobby cord may slide Without being severed.

The strips 12 are relatively rotatable about pin 13 to separate the end portions 18 so that the dobby cord may be passed therebetween and into the space within the dobby loop.

Having thus described this invention in such full, clear, concise and exact terms as to enable any person skilled in the art to which it pertains to make and use the same, and having set forth the best mode contemplated of carrying out this invention, I state that the subject-matter which I regard as being my invention is particularly pointed out and distinctly claimed in what is claimed, it being understood that equivalents or modi fications of, or substitutions for, parts of the above specifically described embodiments of the invention may be made without departing from the scope of the invention as set forth in what is claimed.

What is claimed is:

1. A dobby loop comprising parallel sheet metal strips, a pin connecting the strips together at one end, and a member rotatably mounted on said pin between said strips to engage a dobby jack, the free ends of said strips inter-engaging with each other and at least one of said free ends forming a surface curved on a substantial radius to afford a smooth surface on which a dobby cord may slide freely, said strips being rotatable relatively about said pin to move the free ends apart to permit a dobby cord to be passed therebetween into the space between the strips and into engagement with said curved surface.

2. The combination of elements set out in claim 1 in which the free ends of the strips are split and bent to prevent disengagement in use.

3. The combination of elements set out in claim 1 in which the free ends are curved about an axis normal to the long axis of the strips and are nested one within the curved part of the other to prevent disengagement in use.

References Cited in the file of this patent UNITED STATES PATENTS 2,181,317 Fernstrom Nov. 28, 1939 2,437,739 Harris Mar. 16, 1948 2,554,303 Longhenrich May 22, 1951 2,598,444 Savage May 27, 1952 FOREIGN PATENTS 562,492 France Sept. 6, 1923 

